FI101823B - locking device - Google Patents

Description

101823

locking device

The invention relates to a locking device for movable plate-like elements 5 supported on an upper and lower guide rail, which elements are provided with guide members arranged at the top and bottom of the element, the guide rails being provided with an element pivot point, where the element is pivotable. 10, wherein at least one of the guide members forming the pivot axis is arranged to lock in place on the guide rail when the element is pivoted relative to said pivot axis.

15 Structures of the type mentioned above are used, for example, in balcony glazing, in which case the glasses can, if desired, be moved to the side one by one and turned, for example, 90 ° with respect to the vertical pivot axis.

In one such known system, the flattened part of the pivot shaft goes into a groove in the guide with circular spreads (Figures 2a, 2b). In this case, when the plate-like element is turned and the shaft rotates at the application • · ·, the shaft can no longer move forwards or *: "25 backwards. If, for example, due to structural tolerances • ·; the shaft and its flattened part are not completely circular • · · inside the application when the plate-like element is turned, the angle of the flattened part impinges on the edge of the guide, and in order to prevent the impact in all conditions 30, a sufficiently large clearance must be used, which in turn makes the structure inaccurate.

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The object of the invention is to provide a locking device in which the collision of the parts belonging to ..1 · 1 with each other is prevented in all conditions: 35 and the operation of the locking device of which. nevertheless is precise and backlash-free.

This object is solved according to the invention in such a way that the locking device according to the invention is characterized in that the locking member arranged to lock in place comprises a locking part of circular cross-section, non-rotatably relative to the element 5, the straight part of which is directed substantially by the guide rails. when the element moves on the guide rails, a guide for the locking part is provided at the pivot point of the element, one of the straight, parallel side surfaces 10 having a circular recess, and that the smallest diameter of the substantially equal to the maximum distance between opposite side surfaces of the guide at the circular recess.

In a preferred embodiment of the invention, it is arranged that the radius of curvature 20 of the curved outer surface of the locking part is substantially the same as the radius of curvature of the inner surface of the circular recess of the guide arranged for the locking part.

The invention will now be described in more detail with reference to the accompanying drawing, in which: • # · • · · •·· «· ··

Fig. 1 shows a vertical section of an upper and lower j *; *; provided with a locking device according to the invention; of the plate-like 30 elements movable on a guide rail.

• · • · • · * * Figures 2a and 2b show a prior art • · · • · · *. the locking device cut in line with the section taken along the line III-III: 35 in Fig. 1.

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Fig. 3a shows a section along the line III-III in Fig. 1.

Figures 3b-3e show a section 5 corresponding to Figure 3a with the plate-like element turned to different positions.

The locking device according to the invention is intended for plate-like elements 3, for example windows, doors, balcony glazing elements or the like, which can be moved on the upper and lower guide rails 1, 2.

Figure 1 shows a schematic vertical section of an element 3 provided with a locking device 15 according to the invention, which can be moved on rails 1, 2.

The element 3 is provided with guide members 4, 5 arranged at the top and bottom of the element. The guide rails 1, 2 are provided with a pivot point 20 for each element 3, where the element 3 can be pivoted by a guide member 4 at the top and a guide member 5 at the bottom with respect to the pivot axis 6. At least one of the control members 4, 5, preferably the upper 4, forming the pivot axis 6 is arranged to lock in place in the guide rail when the element 3 is pivoted relative to said pivot axis 6. In other words, movement in the direction of the guide rail 1 of said control member 4 is prevented at said pivot point by means of a locking device as soon as the element 3 is pivoted.

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The guide member 4 arranged to lock in place comprises a locking part 7 of circular cross-section arranged in a non-rotating manner with respect to the element 3, the straight part 8 of which is oriented substantially parallel to the guide rails 1, 2 as the element 3 moves on the guide rails 1, 2. The locking part 7 is preferably formed by a pin-shaped or disc-shaped part. The central angle corresponding to the arc of the circular segment 10 in the locking part 7 is at least 180 °.

A guide 9 is arranged at the pivot point of the element 3 for the locking part 7, one of the straight, parallel side surfaces 10, 11 facing each other being provided with a circular recess 12. A separate recess 12 is provided in the guide 9 for each pivotable element 3.

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The smallest diameter dimension d of the circular segment locking part 7 is smaller than the distance a between the straight side surfaces 10, 11 of the guide 9 to ensure unobstructed movement of the locking part in the guide 9. Correspondingly, the largest diameter of the circular segment locking part D is substantially the maximum distance A between the circular recess 12 in order to ensure the clearance between the locking part 7 and the guide 9 and thus the precise operation when the element 3 is turned. The same is also facilitated if the radius of curvature r of the curved outer surface of the locking part 7 is substantially the same as the radius of curvature R of the inner surface of the circular recess 12 of the guide 9 arranged for the locking part 7.

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• A: The locking device according to the invention operates in the following manner.

• · • · ΐ'ΐ 'In Fig. 3a the locking part 7 is moved with the element 3 between the opposite side surfaces 10, 11 of the guide 3.

“· To ensure unobstructed movement, a suitable clearance is provided between the locking part 7 and the • · · -s side surfaces 10, 11.

t • · · ··· * · When the locking part 7 has reached the desired position, not shown, with a stop (Fig. 3b), it is possible to; the element 3 and with it the locking part 7 is turned, whereby

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the curved part of the locking part 7 and the curved part of the recess 12 • · 5 101823 of the guide 9 engage each other (Fig. 3b) and prevent the rearward movement of the locking part 7 and thus of the whole element 3.

As can be seen from Figure 3c, a relatively large tolerance can be allowed for the stopping of the locking part 7. In other words, the locking part 7 can be driven slightly above the optimum point according to Fig. 3b.

As the locking part 7 turns about 90 ° (Fig. 3d), the locking part 7 10 focuses on the recess 12 and prevents forward and backward movement.

As can be seen from Fig. 3e, the locking part 7 can turn more than 90 ° and still effectively prevent movement forward, backward-15 and parallel to the element 3.

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Claims (2)

1. Reading device for disc-shaped disc-shaped members (1, 2) displaceable in upper and lower guides (1, 2), which elements are provided with guide means (4, 5) arranged in the upper and lower edge of the element, wherein in the guide rails (1) , 2) a turning point is provided for the element (3), wherein the element (3) is pivotally relative to a pivot shaft (6) formed by the control means (4) at the upper edge of the element and the control means (5) at the lower edge of the element 10, wherein at least one of the rotary shaft (6) forming the control means (4, 5) is arranged to be read in place in the guide rail (1, 2) as the element (3) is rotated relative to said rotary shaft (6), characterized in that: the legibly arranged guide member (4) has a reading member (7) pivotally arranged in relation to the element (3) with a circular segmental shape, the straight part (8) being directed substantially in the direction of the guide rails (1, 2). where the element (3) moves in the guide rails (1, 2), that in the turning position of the element a a guide (9) for the reading unit (7) is provided, one of which (11) is provided with a straightening (12) in the shape of a circular pitch, the straight parallel side surfaces (10, 11) of which that the smallest diameter (d) of the ···· circle segment-shaped welding member (7) is smaller than the distance (a) between the straight side surfaces (10, 11): and the largest diameter (D) is substantially equal as ·: · the largest distance (A) between the opposite side surfaces of the guide at the circular cup-shaped recess (12). • • · · · · · · Device according to claim 1, characterized. . The curved radius of the reading portion (7) of the curved radius of the reading member (7) is substantially the same as the radius of curvature (R) of the guide portion (7) arranged for the reading member (7). - molded recess (12) inner surface. • · • · · • • • •